Burst your way up to the ceiling in the side where you have less holes in the ceiling and drop as many bubbles as you can onto Spiders (Pic attached) . If you wish to try for higher score, use the Mystery Bubbles to get more Bubbles from the cauldron before the ceiling drops

Here is a Charm Video for Level 226, to compensate for the Charms I haven’t used any Potions, but videos with no Charms will also be published here ASAP! The link for Level 226 Video is http://bubble-witch-saga.se/tag/226